Sectional shoe for the runner-vanes of centrifugal pumps



. sEcT'lNAL SHOE Foa THE RUNNER vANEs 0F 'NrmFuGAL PUMPS.

APPLICATIQN FILED JUNE 6 1919] *Patented Jan. 13,1920.

AHORA/EVS UNITED sTATEs oEEIoE.

ALFRED H. vExToN, or CHICAGOHEIGHTS,iLLiNors,4 A-ssQIGNoE. To AMEnrcAN MANGANESE STEEL COMPANY, `oEAUerUsTA, MAINE, A conPoEATIoN or A MAINE. l

sEcTIoNAL lsnoE Eon THE RUNNER-VANES or CENTRIEUGAL UMPs. V

To all whom t may concern.'

Be it known that I, ALFRED citizen of theUnited States, and a resident of Chicago Heights, in the county of Cook andState of Illinois, have made and inventedI certain new and useful Improve-v ments in 'Sectional Shoes for the Runner- Vanes of Centrifugal Pumps,'of which the following is a spcification.

My 'nvention relates to improvementsin the runner or rotor of centrifugal pumps,

and more particularly to the wearin shoesl with which the runner vanes are or inarily provided. l l

The use of protecting shoes upon the runner vanes for centrifugal pumps has now bei come the general practice due vto the abrasive .action of the sand and gravel which pass through the pump during the dredging op# p erations. Heretofore it. has been necessary to dlsmantle the pump and remove the rotor or runner in order to renew the shoes after they-have become'worn. This dismantling of the pump and detachment of the runner from the drivin shaft so as to allow it to bel removed from t e pump shell involves con-` siderable labor and time and has been necessary due to the large size of the wearing shoes, which prevented them vfrom being withdrawn through the suction yopening of the runner, and also due to their extreme the 'pump shell or detached from the driving shaft, thus reducing to a minimum the period ofv shutdown involved due to renewing the wearing shoes of the runner.

A further object is to accomplish the aforementioned ends and at the same time provide a wearin shoe which may be conveniently handle may be inserted through the suction opening within the runner and 4 installed in place, and at the sami)J time so constructed that thatl ortion of the shoe which wears more rapi ly than the remaining portions may beremoved and a new section inserted in place, whereby the maximum life and wear are obtained from each particular part ofthe wearing shoe.

With the above and other objects in view,

H. EXTON, al

i hereinafter the suction opening 6. Located within the `Appelation ined :une 6,1919. serielle. a'oaiia. y l

my invention consists 'in the improved runner or rotor for centrifugal pu trated in the accompanying'ldralwi g and described and, 'pa cularly claimed,`and in'sjuch variations a l fications thereof as :will be obviou 'totho'se 6o skilled in the, artto vwhich/my invention#re lates.

. In the accompaiiywig drmwings:

Figure -1 is a yiew 1n side elevation,`and' l partly in section, showing a ce trifugal '65 pump khaving my improved\runner sho's in stalled therein; v

Fig. 2 is a sectlonal 'vliew' of the runnen, /1' taken on the lineQ-Z of Fig. 1;y j// Fig. 3 is a view in section taken n the line 70 3-3 of Fig. l; .and A Fig. 4 is avievyT in perspective of my \im proved wearing shoe. d' y Referring partcularly to l the several views of the drawing, the centrifugal pump shown is of the conventionaltype as e'mplovedv in sand and -gravel dredging plants an includes the shell or body portion 4 hav-4 ing 'the peripheral delivery opening 5 and shell and rotatably mounted upon'theshaftf 7, is the rotor or runner 8, the same being formed in the customary manner and including the frame or side pieces 9, driving hub 10, and vanes 11., the latter being curve 35 in the usual manner, as more clearly shown v lin Fig. 1.? v'

' Rigidly attached to the vanes 11, eitherv by rivets, bolts, fr other suitable means, are the wea'ring 12, .the same being com- 'posed of the coplanar and coextensive sections 13--13, the line of division owhicb. extends lon 'tudinally or diametrically of. the pump. hese sections are providedA with the lap joint 14,,whereby the same are protected from the abrasive action ofthe solid material which passes through the pump and assurance is had that the'vane 11 is also properly protected. vThe number of sections into which each wearing shoe is divided will depend upon' the size and character of the pump, ordi- .narily two sections being sufficient, but in y some instances as high as three or four sections may be utilized.

By thus forming the runner shoe or shoes in longitudinal sections, I am able to quickly and conveniently remove the shoe sections runner from the driving shaft 7. Further,

the forming of theI shoe in sections allows the'same to be more easlly and readlly han- ,tdled and transported from place to place, even thou h the built-up wearing shoe is of considerab e size and weight, such, for example, as would be installed in a centrifugal pump of ten or more feet in diameter.

Furthermore, I have found that in certain instances one side of the runner shoe will rwear more rapidly than the other portions,

which has heretofore caused the discarding of the entire shoe, entailing considerable loss of metal. With my improved shoe, however, those portions or sections of the shoe which have become but little worn during previous use may be re-used with new sections, so that the maximum wearing life for every portion of the shoe is obtained, this feature being of particular importance as the shoes are ordinarily formed of manganese steel, and the scrapping of a shoe which is only partially worn would involve a considerable ina'ncial'lossf` 'Y Having thus described and explained invention, I claim and desire to secure by Letters `Patent:

1. A wearing shoe for a centrifugal pump. l

runner vane, comprising a plurality of longitudinally curved coplanar sections and means whereby said sections may be remov cent-ral suction opening, said shoe comprising a plurality of sections' secured to said vane, said runner and shoe sections constructed and adapted,"so that said shoe sections may be inserted and withdrawn through said suction opening o'f the runner.

4. In an apparatus of the class` described, a runner including longitudinally curvedvanes and removable wearing shoes secured to said vanes, said wearing shoes formed in sections and held in coplanarV relation.

5. In anapparatus of the class described, l

a runner including longitudinally curved vanes and removable wearing shoes secured to said vanes, said Wearing shoes formed in sections and` held in coplanar relation, said runner-.shoe sections constructed and adapted, so that the shoe sections may be inserted -and Withdrawn through the suction opening of the runner.

Slgned' at New York, boroughof Manhattan, 1n the county of New York and State of New York, this 4th da-y of June, A. D. 1919. l

ALFRED 1 1, EXToN. y Witnesses: l

ANNA V. WALSH,A AGNES T. GRAY., 

